package com.io.util;
import java.io.UnsupportedEncodingException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

/**
 * 随机生成姓名、密码、数字 工具类
 */
public class RandomUtil {
    public static void main(String[] args) {
        //将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        ParsePosition pos = new ParsePosition(0);
        Date date = formatter.parse("2020-01-02", pos);
        for (int i = 0; i < 5; i++) {
            System.out.println("当前日期="+date);
            //System.out.println("随机生成日期="+getRandomDate());
            //System.out.println("随机生成性别="+sex[getARandomNumber(2)]);
            //System.out.println("随机生成一个数字="+getARandomNumber(2));
        }

        //System.out.println("随机生成姓名="+getRandomChineseName());
        //System.out.println("随机生成密码="+getRandomPassword(6));
        //System.out.println("随机生成数字="+getRandomNumber(6));
        //System.out.println("随机生成一个数字="+getRandomNumber(2));
    }
    /**
     * 获取当前系统时间
     * @return 返回当前系统时间
     */
    public static Date getNowDate(){
        Date date = new Date();
        return date;
    }
    /**
     * 随机生成地址
     * @return
     */
    public static String getRandomAddress(){

        return "123";
    }
    /**
     * 生成随机DateTime日期
     * @return DateTime日期
     */
    public static String getRandomDate(){
        Random rndYear=new Random();
        int year=rndYear.nextInt(18)+2000;
        Random rndMonth=new Random();
        int month=rndMonth.nextInt(12)+1;
        Random rndDay=new Random();
        int Day=rndDay.nextInt(30)+1;
        Random rndHour=new Random();
        int hour=rndHour.nextInt(23);
        Random rndMinute=new Random();
        int minute=rndMinute.nextInt(60);
        Random rndSecond=new Random();
        int second=rndSecond.nextInt(60);
        return year+"-"+cp(month)+"-"+cp(Day)+"  "+cp(hour)+":"+cp(minute)+":"+cp(second);
    }

    private static String cp(int num){
        String Num=num+"";
        if (Num.length()==1){
            return "0"+Num;
        }else {
            return Num;
        }
    }
    /*版权声明：本文为CSDN博主「王者之子」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
    原文链接：https://blog.csdn.net/nurjan101/article/details/76559583*/
    /**
     * 获取姓氏和名字
     * @return 姓名
     */
    public static String getRandomChineseName() {
        Random random=new Random(System.currentTimeMillis());
        // 598百家姓//姓氏
        String[] Surname= {"赵","钱","孙","李","周","吴","郑","王","冯","陈","褚","卫","蒋","沈","韩","杨","朱","秦","尤","许",
                "何","吕","施","张","孔","曹","严","华","金","魏","陶","姜","戚","谢","邹","喻","柏","水","窦","章","云","苏","潘","葛","奚","范","彭","郎",
                "鲁","韦","昌","马","苗","凤","花","方","俞","任","袁","柳","酆","鲍","史","唐","费","廉","岑","薛","雷","贺","倪","汤","滕","殷",
                "罗","毕","郝","邬","安","常","乐","于","时","傅","皮","卞","齐","康","伍","余","元","卜","顾","孟","平","黄","和",
                "穆","萧","尹","姚","邵","湛","汪","祁","毛","禹","狄","米","贝","明","臧","计","伏","成","戴","谈","宋","茅","庞","熊","纪","舒",
                "屈","项","祝","董","梁","杜","阮","蓝","闵","席","季","麻","强","贾","路","娄","危","江","童","颜","郭","梅","盛","林","刁","钟",
                "徐","邱","骆","高","夏","蔡","田","樊","胡","凌","霍","虞","万","支","柯","昝","管","卢","莫","经","房","裘","缪","干","解","应",
                "宗","丁","宣","贲","邓","郁","单","杭","洪","包","诸","左","石","崔","吉","钮","龚","程","嵇","邢","滑","裴","陆","荣","翁","荀",
                "羊","于","惠","甄","曲","家","封","芮","羿","储","靳","汲","邴","糜","松","井","段","富","巫","乌","焦","巴","弓","牧","隗","山",
                "谷","车","侯","宓","蓬","全","郗","班","仰","秋","仲","伊","宫","宁","仇","栾","暴","甘","钭","厉","戎","祖","武","符","刘","景",
                "詹","束","龙","叶","幸","司","韶","郜","黎","蓟","溥","印","宿","白","怀","蒲","邰","从","鄂","索","咸","籍","赖","卓","蔺","屠",
                "蒙","池","乔","阴","郁","胥","能","苍","双","闻","莘","党","翟","谭","贡","劳","逄","姬","申","扶","堵","冉","宰","郦","雍","却",
                "璩","桑","桂","濮","牛","寿","通","边","扈","燕","冀","浦","尚","农","温","别","庄","晏","柴","瞿","阎","充","慕","连","茹","习",
                "宦","艾","鱼","容","向","古","易","慎","戈","廖","庾","终","暨","居","衡","步","都","耿","满","弘","匡","国","文","寇","广","禄",
                "阙","东","欧","殳","沃","利","蔚","越","夔","隆","师","巩","厍","聂","晁","勾","敖","融","冷","訾","辛","阚","那","简","饶","空",
                "曾","毋","沙","乜","养","鞠","须","丰","巢","关","蒯","相","查","后","荆","红","游","郏","竺","权","逯","盖","益","桓","公","仉",
                "督","岳","帅","缑","亢","况","郈","有","琴","归","海","晋","楚","闫","法","汝","鄢","涂","钦","商","牟","佘","佴","伯","赏","墨",
                "哈","谯","篁","年","爱","阳","佟","言","福","南","火","铁","迟","漆","官","冼","真","展","繁","檀","祭","密","敬","揭","舜","楼",
                "疏","冒","浑","挚","胶","随","高","皋","原","种","练","弥","仓","眭","蹇","覃","阿","门","恽","来","綦","召","仪","风","介","巨",
                "木","京","狐","郇","虎","枚","抗","达","杞","苌","折","麦","庆","过","竹","端","鲜","皇","亓","老","是","秘","畅","邝","还","宾",
                "闾","辜","纵","侴","万俟","司马","上官","欧阳","夏侯","诸葛","闻人","东方","赫连","皇甫","羊舌","尉迟","公羊","澹台","公冶","宗正",
                "濮阳","淳于","单于","太叔","申屠","公孙","仲孙","轩辕","令狐","钟离","宇文","长孙","慕容","鲜于","闾丘","司徒","司空","兀官","司寇",
                "南门","呼延","子车","颛孙","端木","巫马","公西","漆雕","车正","壤驷","公良","拓跋","夹谷","宰父","谷梁","段干","百里","东郭","微生",
                "梁丘","左丘","东门","西门","南宫","第五","公仪","公乘","太史","仲长","叔孙","屈突","尔朱","东乡","相里","胡母","司城","张廖","雍门",
                "毋丘","贺兰","綦毋","屋庐","独孤","南郭","北宫","王孙"};

        int index=random.nextInt(Surname.length-1);
        //获得一个随机的姓氏
        String name = Surname[index];
        // 从常用字中选取一个或两个字作为名
        if(random.nextBoolean()){
            name+=getChinese()+getChinese();
        }else {
            name+=getChinese();
        }
        //System.out.println("随机姓名:"+name);
        return name;
    }
    /**
     *  获取名字
     * @return 名字
     */
    public static String getChinese() {
        String str = null;
        int highPos, lowPos;
        Random random = new Random();
        highPos = (176 + Math.abs(random.nextInt(71)));//区码，0xA0打头，从第16区开始，即0xB0=11*16=176,16~55一级汉字，56~87二级汉字
        random=new Random();
        lowPos = 161 + Math.abs(random.nextInt(94));//位码，0xA0打头，范围第1~94列

        byte[] bArr = new byte[2];
        bArr[0] = (new Integer(highPos)).byteValue();
        bArr[1] = (new Integer(lowPos)).byteValue();
        try {
            str = new String(bArr, "GB2312");	//区位码组合成汉字
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        //System.out.println("getChinese():str="+str);
        return str;
    }
    /*————————————————
    版权声明：本文为CSDN博主「Emilio66」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
    原文链接：https://blog.csdn.net/zzy2011266/article/details/42011047*/

    /**
     * 获取随机的大小写的英文字母
     * @return 英文字母
     */
    public String getRandomEnglishLetters(int length) {
        String s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
        char[] c = s.toCharArray();
        Random random = new Random();
        String str = "";
        //System.out.println("String str="+str);
        for (int i = 0; i < length; i++) {
            //System.out.print(c[random.nextInt(c.length)]);
            str += c[random.nextInt(c.length)];
        }
        //System.out.println("str="+str);
        return str;
    }
    /**
     * 获取一个随机数
     * @param maxNum 随机数最大值
     * @return 返回一个随机数
     */
    public static int getARandomNumber(int maxNum) {
        Random random = new Random();
        int result = random.nextInt(maxNum);
        //System.out.println("random=" + result);
        return result;
    }
    public final static String[] word={
            "a","b","c","d","e","f",
            "g","h","j","k","m","n",
            "p","q","r","s","t","u",
            "v","w","x","y","z",
            "A","B","C","D","E","F",
            "G","H","J","K","M","N",
            "P","Q","R","S","T","U",
            "V","W","X","Y","Z",
    };
    static char[] sex={'男','女'};//性别字符数组
    public static String[] num={"0","1","2","3","4","5","6","7","8","9"};
    /**
     * 随机生成密码
     * @return 随机生成的密码
     */
    public static String getRandomPassword(int len){
        StringBuffer stringBuffer=new StringBuffer();
        //以当前时间生成random
        Random random=new  Random(new Date().getTime());
        boolean flag=false;
        //设置默认密码的长度为1+6位
        int length=random.nextInt(1)+len;
        for (int i = 0; i < length; i++) {
            if(flag){
                stringBuffer.append(num[random.nextInt(num.length)]);
            }else{
                stringBuffer.append(word[random.nextInt(word.length)]);
            }
            flag=!flag;
        }
        return stringBuffer.toString();
    }
    /**
     * 生成随机数字
     * @return 返回自定义长度的随机数字
     */
    public static int getRandomNumber(int length){
        //return Integer.toString((int)((Math.random()*9+1)*100000));
        return (int)((Math.random()*9+1)*100000);
    }
    /*  版权声明：本文为CSDN博主「呢安喃」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
        原文链接：https://blog.csdn.net/qq_32722783/article/details/80830152*/
}
